If an officer arrests me for DUI or DWI, is he required to read me my Miranda rights?

No, but it can be relevant in DUI/DWI cases.   

This is a common mistake by attorneys. General practice is that cops don't read Miranda after an arrest unless they are expecting to conduct an interrogation and hoping to elicit a confession.

Nevertheless, in some DWI Accident cases, they need statements from our clients, and an Experienced Fairfax County DUI Attorney might have the opportunity to get such statements suppressed.